Fix labels and jumps

assembler/assembler.h

@@ -24,7 +24,7 @@
 //
 typedef struct {
     char name[64];
-    int address;  // address (in the output machine code)
+    uint32_t address;  // address (in the output machine code)
 } Label;
 
 extern Label labels[MAX_LABELS];
@@ -43,7 +43,7 @@ void toLowerCase(char *string);
 int lookupLabel(const char *name);
 
 // Add a label to the table
-int addLabel(const char *name, int address);
+int addLabel(const char *name, uint32_t address);
 
 //
 // Parse a register string (e.g., "R0", "R1", etc.) and return it's number.
@@ -83,7 +83,7 @@ void firstPass(const char *source);
 // The second pass actually translates the assembly instructions to machine code.
 // The machine code is written into the provided buffer. (It must be large enough.)
 //
-int completePass(const char *input, CPU *cpu, bool erase);
+uint32_t completePass(const char *input, CPU *cpu, bool erase);
 
 
 #endif //RISCB_ASSEMBLER_H